Indicator database

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    Physical Trade Balance (PTB)

    The trade surplus or deficit of material resources within an economy, calculated as imports minus exports of raw materials and manufactured products.

    Adjusted savings: natural resources depletion (% of GNI)

    Natural resource depletion is the sum of net forest depletion, energy depletion, and mineral depletion.
    (Source: Worldbank, http://data.worldbank.org/indicator/NY.ADJ.DRES.GN.ZS, retrieved 2-2-2015)

    Productivity of artificial land

    Productivity of artificial land is defined as the gross domestic product (GDP) of a country divided by its total artificial land. Artificial land consists of built-up areas (areas covered with buildings and greenhouses) and non built-up areas (streets and sealed surfaces). Artificial land productivity shows whether built-up and non built-up areas are efficiently used to generate added economic value.
    For the calculation of artificial land productivity Eurostat uses the GDP in millions of PPS (Purchasing Power Standard).

    Water productivity

    The indicator measures how much economic output is produced per cubic meter of fresh water abstracted. It indicates the productivity of water use.

    Gross nutrient balance in agricultural land - nitrogen

    The gross nutrient balance represents the total potential threat to the environment of nitrogen surplus or deficit in agricultural soils. It is calculated accounting the nitrogen added to an agricultural system and the nitrogen removed from the system per hectare of agricultural land.
    Retrieved from: http://ec.europa.eu/eurostat/tgm/table.do?tab=table&init=1&plugin=0&lang... on 30/03/2015

    Gross nutrient balance in agricultural land - phosphorus

    The gross nutrient balance represents the total potential threat to the environment of phosphorus surplus or deficit in agricultural soils. It is calculated accounting the phosphorus added to an agricultural system and the phosphorus removed from the system per hectare of agricultural land.